Table 3 ABO blood groups in COVID-19 cases and controls distributed according to age groups
Blood group | N (%) | |||||||
|---|---|---|---|---|---|---|---|---|
Cases (N = 1014) | Controls (N = 901) | |||||||
< 30 (N = 108) | 30–39 (N = 196) | 40–49 (N = 220) | ≥ 50 (N = 490) | < 30 (N = 473) | 30–39 (N = 323) | 40–49 (N = 79) | ≥ 50 (N = 26) | |
A | 43 (39.8) | 68 (34.7) | 79 (35.9) | 170 (34.7) | 162 (34.2) | 103 (31.9) | 26 (32.9) | 4 (15.4) |
B | 22 (20.4) | 53 (27.0) | 47 (21.4) | 99 (20.2) | 105 (22.2) | 72 (22.3) | 14 (17.7) | 3 (11.5) |
AB | 8 (7.4) | 19 (9.7) | 21 (9.5) | 61 (12.4) | 38 (8.0) | 35 (10.8) | 4 (5.1) | 4 (15.4) |
O | 35 (32.4) | 56 (28.6) | 73 (33.2) | 160 (32.7) | 168 (35.5) | 113 (35.0) | 35 (44.3) | 15 (57.7) |
p | 0.566 | 0.131 | ||||||